Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A hugely vast Irish landscape of barren rock that stretches for miles.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

A stunning Victorian abbey and walled garden on a lakefront.

The ancient tomb acts as a calendar that keeps perfect time.

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

This tiny island is recognized as the site where St. Paul landed after a shipwreck in the first century.

This is one of the very few intact windmills built by the Knights of St. John in the island nation of Malta.

Estimated at over 1,000 years old, one of Malta's oldest trees serves as a living link to its ancient past.

Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

These 19th-century military fortifications spanning the island of Malta now form a nice countryside hiking trail.

This abandoned building, which is the second-largest structure on the Maltese island of Comino, has a complicated past.

People have been making salt here using traditional methods for centuries.